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A marine biologist measures the temperature of an ice core.
Photo

Measuring Ice Core Temperatures

Marine biologist Mette Kaufman measures the temperature of a recently-drilled ice...
Color illustration of an ancient bivalve.
Photo

Elevator Rudists

These "elevator" rudists, an ancient bivalve, used one long heavy valve to anchor...
Notice the pink tentacles, which “recliners” used to filter feed.
Photo

Recliner Rudists

Where ocean currents were strong, ancient rudist “recliners” lay unattached on...
Rudist clams are mollusks that went extinct about 65 million years ago.
Photo

Rudist Clams

Rudist clams are mollusks that went extinct about 65 million years ago. They were...
Two nurse sharks hover over a baited cage
Lesson Plan

Where Have All the Glaciers Gone?

Students will describe how climate change is affecting sea ice, vegetation, and...
Mon, 08/08/2011 - 16:33
/themes/custom/a_clean_ocean
Two nurse sharks hover over a baited cage
Lesson Plan

The Puzzle of Ice Age Americans

Students describe alternative theories for arrival of first humans to come to...
Tue, 12/01/2009 - 12:19
/themes/custom/a_clean_ocean
Two nurse sharks hover over a baited cage
Lesson Plan

The Methane Circus

Students will describe the overall events that occurred during the Cambrian...
Mon, 11/30/2009 - 18:31
/themes/custom/a_clean_ocean
A rendering of an underwater marine scene depicting life ~145-65 million years ago, when rudist clams were the major reef builders.
Photo

Carbonate Reef (Cretaceous Period: 145 - 65 Million Years Ago)

This illustration shows the edge of a warm inland sea during the Cretaceous Period,...
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  • Ocean Life
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    • Deep Sea
    • Coasts & Shallow Water
    • Poles
    • Census of Marine Life
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    • Temperature & Chemistry
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